To provide a manufacturing method for a studless tire capable of sufficiently ensuring rigidity of a land part for forming a sipe relative to change of a tire size and sufficiently ensuring required length of a sipe edge in the respective land parts when a plurality of sipes are arranged on the tread land parts of various kinds of sizes of the tire with an interval in a circumferential direction.
When a plurality of sipes are arranged on the tread land parts of various kinds of sizes of the tire with an interval in the circumferential direction, the number of pitches of tread pattern formed over the whole periphery on a tread ground-contact surface is made constance regardless of the tire size. A ratio that the number of pitches of the minimum pitch length of the plurality of kinds of pitch length is occupied in the total number of the number of pitches is increased as in the tire with a small outer diameter, and the required number of sipes are formed in the respective pitch length.
| JP6350001 | Pneumatic tires |
| WO/2021/085004 | PNEUMATIC TIRE |
| JP2022161695 | TIRE FOR MOTOR CYCLE |
SHIBATA KENICHI
Kosaku Sugimura
Kiyoshi Kuruma
Shiro Fujitani
Tatsuya Sawada
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